/* ===== RESET & BASE ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #f0f4f8;
  --color-surface: #ffffff;
  --color-primary: #4f46e5;
  --color-primary-hover: #4338ca;
  --color-primary-light: #e0e7ff;
  --color-correct: #16a34a;
  --color-correct-bg: #dcfce7;
  --color-correct-border: #86efac;
  --color-incorrect: #dc2626;
  --color-incorrect-bg: #fee2e2;
  --color-incorrect-border: #fca5a5;
  --color-text: #1e293b;
  --color-text-secondary: #64748b;
  --color-text-light: #94a3b8;
  --color-border: #e2e8f0;
  --color-accent: #7c3aed;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ===== VIEWS ===== */
.view {
  display: none;
  min-height: 100vh;
  animation: fadeIn 0.4s ease;
}

.view.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ===== LANDING ===== */
.landing-container {
  max-width: 600px;
  width: 100%;
  padding: 2rem 1.5rem;
  text-align: center;
}

.landing-hero {
  margin-bottom: 2rem;
}

.logo-icon {
  font-size: 4rem;
  margin-bottom: 0.75rem;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.08); }
}

.landing-hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.landing-hero h1 .accent {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  margin-top: 1rem;
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 1rem 0.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

.stat-number {
  display: block;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-primary);
}

.stat-label {
  display: block;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Category Pills */
.category-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  justify-content: center;
  margin-bottom: 2rem;
}

.category-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.3rem 0.7rem;
  border-radius: 9999px;
  font-size: 0.72rem;
  font-weight: 500;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border: 1px solid transparent;
  white-space: nowrap;
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 2.5rem;
  border: none;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  font-size: 1.1rem;
  font-weight: 700;
  font-family: var(--font);
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: 0 4px 15px rgba(79, 70, 229, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.5);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-start {
  margin-bottom: 1rem;
}

.landing-note {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

/* ===== QUIZ ===== */
.quiz-container {
  max-width: 700px;
  width: 100%;
  padding: 1.5rem 1.25rem;
}

.quiz-header {
  margin-bottom: 1.5rem;
}

.progress-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

#question-counter {
  font-weight: 600;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.btn-start-over {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.65rem;
  border: 1.5px solid var(--color-border);
  border-radius: 9999px;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-size: 0.78rem;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-start-over:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.btn-start-over svg {
  flex-shrink: 0;
}

.score-badge {
  background: var(--color-primary-light);
  color: var(--color-primary);
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-weight: 700;
  font-size: 0.85rem;
}

.progress-bar {
  height: 8px;
  background: var(--color-border);
  border-radius: 9999px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 9999px;
  transition: width 0.5s ease;
  width: 0%;
}

/* Question Card */
.question-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  animation: slideUp 0.4s ease;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.question-meta {
  margin-bottom: 1rem;
}

.category-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.78rem;
  font-weight: 600;
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.category-badge.wa-state {
  background: #fef3c7;
  color: #92400e;
}

.question-text {
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 1.25rem;
  color: var(--color-text);
}

/* Answers */
.answers-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.answer-btn {
  width: 100%;
  text-align: left;
  padding: 0.9rem 1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  font-size: 0.95rem;
  font-family: var(--font);
  line-height: 1.45;
  color: var(--color-text);
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}

.answer-btn:hover:not(.disabled) {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.answer-btn.disabled {
  cursor: default;
}

.answer-btn.correct {
  border-color: var(--color-correct-border);
  background: var(--color-correct-bg);
  color: #166534;
}

.answer-btn.correct::before {
  content: '✓ ';
  font-weight: 700;
}

.answer-btn.incorrect {
  border-color: var(--color-incorrect-border);
  background: var(--color-incorrect-bg);
  color: #991b1b;
}

.answer-btn.incorrect::before {
  content: '✗ ';
  font-weight: 700;
}

.answer-btn.dimmed {
  opacity: 0.5;
}

/* Feedback Panel */
.feedback-panel {
  margin-top: 1.25rem;
  padding: 1.25rem;
  border-radius: var(--radius-md);
  background: #f8fafc;
  border: 1px solid var(--color-border);
  animation: fadeIn 0.3s ease;
}

.feedback-panel.hidden {
  display: none;
}

.feedback-result {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 0.75rem;
}

.feedback-result.is-correct {
  color: var(--color-correct);
}

.feedback-result.is-incorrect {
  color: var(--color-incorrect);
}

.feedback-explanation {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 0.75rem;
}

.feedback-source {
  font-size: 0.82rem;
  color: var(--color-text-light);
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border);
}

.feedback-source a {
  color: var(--color-primary);
  text-decoration: none;
  word-break: break-all;
}

.feedback-source a:hover {
  text-decoration: underline;
}

.btn-next {
  margin-top: 1.25rem;
  width: 100%;
}

.btn-next.hidden {
  display: none;
}

/* ===== RESULTS ===== */
.results-container {
  max-width: 550px;
  width: 100%;
  padding: 2rem 1.5rem;
  text-align: center;
}

.results-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  animation: scaleIn 0.5s ease;
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to   { opacity: 1; transform: scale(1); }
}

.results-icon {
  font-size: 4rem;
  margin-bottom: 0.75rem;
}

.results-title {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.results-score {
  margin-bottom: 1rem;
}

.score-big {
  font-size: 4.5rem;
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.score-label {
  display: block;
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin-top: 0.25rem;
}

.results-message {
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.results-breakdown {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.result-dot {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: #fff;
}

.result-dot.correct {
  background: var(--color-correct);
}

.result-dot.incorrect {
  background: var(--color-incorrect);
}

/* ===== CONFETTI CANVAS ===== */
#confetti-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1000;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 640px) {
  .landing-hero h1 {
    font-size: 2rem;
  }

  .subtitle {
    font-size: 0.95rem;
  }

  .stat-number {
    font-size: 1.4rem;
  }

  .question-card {
    padding: 1.5rem 1.15rem;
  }

  .question-text {
    font-size: 1.05rem;
  }

  .answer-btn {
    padding: 0.8rem 0.9rem;
    font-size: 0.9rem;
  }

  .score-big {
    font-size: 3.5rem;
  }

  .results-card {
    padding: 2rem 1.25rem;
  }

  .btn-primary {
    padding: 0.9rem 2rem;
    font-size: 1rem;
  }
}

@media (max-width: 380px) {
  .landing-hero h1 {
    font-size: 1.7rem;
  }

  .stats-grid {
    gap: 0.5rem;
  }

  .stat-card {
    padding: 0.75rem 0.25rem;
  }

  .category-pill {
    font-size: 0.65rem;
    padding: 0.2rem 0.5rem;
  }
}